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    • 2. 发明授权
    • High strength stainless steel pipe for use in oil well having superior corrosion resistance and manufacturing method thereof
    • 用于具有优异耐腐蚀性的油井的高强度不锈钢管及其制造方法
    • US07767037B2
    • 2010-08-03
    • US10568154
    • 2004-08-11
    • Mitsuo KimuraTakanori TamariYoshio YamazakiRyosuke Mochizuki
    • Mitsuo KimuraTakanori TamariYoshio YamazakiRyosuke Mochizuki
    • C22C38/22C22C38/24C22C38/00C22C38/18
    • C22C38/42C21D1/25C21D6/004C21D9/08C22C38/02C22C38/04C22C38/44Y10S148/909
    • A stainless steel pipe for use in oil wells which has a high strength having a YS of 654 MPa or more and superior corrosion resistance even in a severe corrosive environment in which CO2 and are present and the temperature is high, such as up to 230° C. The pipe contains on a mass percent basis: 0.005% to 0.05% of C; 0.05% to 0.5% of Si; 0.2% to 1.8% of Mn; 0.03% or less of P; 0.005% or less of S; 15.5% to 18% of Cr; 1.5% to 5% of Ni; 1% to 3.5% of Mo; 0.02% to 0.2% of V; 0.01% to 0.15% of N; 0.006% or less of 0; and the balance being Fe and unavoidable impurities, in which Cr+0.65Ni+0.6Mo+0.55Cu−20C≧19.5 and Cr+Mo+0.3Si−43.5C−0.4Mn−Ni−0.3Cu−9N≧11.5 are satisfied (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent the respective contents on a mass percent basis). In addition, quenching treatment and tempering treatment are preferably performed, so that the pipe preferably has a texture containing a martensite phase as a primary phase and 10 to 60 percent by volume of a ferrite phase, or further containing 30 percent by volume or less of an austenite phase. Furthermore, at least one of Al, Cu, Nb, Ti, Zr, W, B, and Ca may also be contained.
    • 一种用于油井的不锈钢管,具有65.4MPa或更高的YS的高强度,并且即使在存在二氧化碳且温度高的剧烈腐蚀性环境(例如高达230°)下也具有优异的耐腐蚀性 C.管道以质量百分比计,含量为0.005%至0.05%; 0.05%〜0.5%的Si; 0.2%〜1.8%的Mn; 0.03%以下的P; 0.005%以下的S; 15.5%〜18%的Cr; 1.5%〜5%的Ni; 1%〜3.5%的Mo; 0.02%〜0.2%V; 0.01%〜0.15%N; 0.006%以下为0; 其余为Fe和不可避免的杂质,其中满足Cr + 0.65Ni + 0.6Mo + 0.55Cu-20C≥19.5和Cr + Mo + 0.3Si-43.5C-0.4Mn-Ni-0.3Cu-9N≥11.5(其中, 其中Cr,Ni,Mo,Cu,C,Si,Mn和N以相应的质量百分比表示各自的含量)。 此外,优选进行淬火处理和回火处理,使得管优选具有以马氏体相为主相和10〜60体积%的铁素体相的织构,或进一步含有30体积%以下 奥氏体相。 此外,还可以含有Al,Cu,Nb,Ti,Zr,W,B和Ca中的至少一种。
    • 3. 发明申请
    • High strength stainless steel pipe excellent in corrosion resistance for use in oil well and method for production thereof
    • 用于油井的耐腐蚀性优异的高强度不锈钢管及其制造方法
    • US20060243354A1
    • 2006-11-02
    • US10568154
    • 2004-08-11
    • Mitsuo KimuraTakanori TamariYoshio YamazakiRyosuke Mochizuki
    • Mitsuo KimuraTakanori TamariYoshio YamazakiRyosuke Mochizuki
    • C21D9/08C22C38/46
    • C22C38/42C21D1/25C21D6/004C21D9/08C22C38/02C22C38/04C22C38/44Y10S148/909
    • A stainless steel pipe for use in oil wells is proposed which has a high strength having a YS of 654 MPa or more and superior corrosion resistance even in a severe corrosive environment in which CO2 and Cl− are present and the temperature is high, such as up to 230° C. The pipe contains on a mass percent basis: 0.005% to 0.05% of C; 0.05% to 0.5% of Si; 0.2% to 1.8% of Mn; 0.03% or less of P; 0.005% or less of S; 15.5% to 18% of Cr; 1.5% to 5% of Ni; 1% to 3.5% of Mo; 0.02% to 0.2% of V; 0.01% to 0.15% of N; 0.006% or less of O; and the balance being Fe and unavoidable impurities, in which Cr+0.65Ni+0.6Mo+0.55Cu−20C≧19.5 and Cr+Mo+0.3Si−43.5C−0.4Mn—Ni−0.3Cu−9N≧11.5 are satisfied (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent the respective contents on a mass percent basis). In addition, quenching treatment and tempering treatment are preferably performed, so that the pipe preferably has a texture containing a martensite phase as a primary phase and 10 to 60 percent by volume of a ferrite phase, or further containing 30 percent by volume or less of an austenite phase. Furthermore, at least one of Al, Cu, Nb, Ti, Zr, W, B, and Ca may also be contained.
    • 提出了一种用于油井的不锈钢管,其具有高达654MPa或更高的YS的高强度,并且即使在苛刻的腐蚀性环境中也具有优异的耐腐蚀性,其中CO 2和 - 存在,温度高,如高达230℃。管道以质量百分比计:0.005%至0.05%C; 0.05%〜0.5%的Si; 0.2%〜1.8%的Mn; 0.03%以下的P; 0.005%以下的S; 15.5%〜18%的Cr; 1.5%〜5%的Ni; 1%〜3.5%的Mo; 0.02%〜0.2%V; 0.01%〜0.15%N; 0.006%以下的O; 其余为Fe和不可避免的杂质,其中Cr + 0.65Ni + 0.6Mo + 0.55Cu-20C> = 19.5和Cr + Mo + 0.3Si-43.5C-0.4Mn-Ni-0.3Cu-9N> = 11.5是 满足(其中Cr,Ni,Mo,Cu,C,Si,Mn和N以相对于以质量%计的含量表示)。 此外,优选进行淬火处理和回火处理,使得管优选具有以马氏体相为主相和10〜60体积%的铁素体相的织构,或进一步含有30体积%以下 奥氏体相。 此外,还可以含有Al,Cu,Nb,Ti,Zr,W,B和Ca中的至少一种。